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Reset canvas state when changing bitmap dimensions

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This commit is contained in:
David Zbarsky 2015-11-28 16:47:28 -08:00
parent b4906aa008
commit 302f41d34b
4 changed files with 103 additions and 2 deletions
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10
components/script/dom/canvasrenderingcontext2d.rs
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@ -143,12 +143,20 @@ impl CanvasRenderingContext2D {
CanvasRenderingContext2DBinding::Wrap)
}
pub fn recreate(&self, size: Size2D<i32>) {
// https://html.spec.whatwg.org/multipage/#concept-canvas-set-bitmap-dimensions
pub fn set_bitmap_dimensions(&self, size: Size2D<i32>) {
self.reset_to_initial_state();
self.ipc_renderer
.send(CanvasMsg::Common(CanvasCommonMsg::Recreate(size)))
.unwrap();
}
// https://html.spec.whatwg.org/multipage/#reset-the-rendering-context-to-its-default-state
fn reset_to_initial_state(&self) {
self.saved_states.borrow_mut().clear();
*self.state.borrow_mut() = CanvasContextState::new();
}
pub fn ipc_renderer(&self) -> IpcSender<CanvasMsg> {
self.ipc_renderer.clone()
}